22021121201200 has 90 divisors (see below), whose sum is σ = 58152594427172. Its totient is φ = 8007680419200.

The previous prime is 22021121201197. The next prime is 22021121201239. The reversal of 22021121201200 is 210212112022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 227442522 + ... + 227539321.

Almost surely, 2^{22021121201200} is an apocalyptic number.

22021121201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021121201200 is an abundant number, since it is smaller than the sum of its proper divisors (36131473225972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021121201200 is a wasteful number, since it uses less digits than its factorization.

22021121201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454981883 (or 454981861 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021121201200 its reverse (210212112022), we get a palindrome (22231333313222).

The spelling of 22021121201200 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, two hundred one thousand, two hundred".